Volume 396 - The 38th International Symposium on Lattice Field Theory (LATTICE2021) - Oral presentation
Hadronic vacuum polarization of the muon on 2+1+1-flavor HISQ ensembles: an update.
S. Lahert*, C. DeTar, A.X. El-Khadra, E. Gámiz, S. Gottlieb, A. Kronfeld, E. Neil, C.T. Peterson and R. Van de Water
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Pre-published on: May 16, 2022
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Abstract
We give an update on the status of the Fermilab Lattice-HPQCD-MILC calculation of the contribution to the muon's anomolous magnetic moment from the light-quark, connected hadronic vacuum polarization. We present preliminary, blinded results in the intermediate window for this contribution, $a_{\mu, \textrm{W}}^{ll}$. The calculation is performed on $N_f =2+1+1$ highly-improved staggered quark (HISQ) ensembles from the MILC collaboration with physical pion mass at four lattice spacings between 0.15 fm and 0.06 fm. We also present preliminary results for a study of the two-pion contributions to the vector-current correlation function performed on the 0.15 fm ensemble where we see a factor of four improvement over traditional noise reduction techniques.
DOI: https://doi.org/10.22323/1.396.0526
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